我想在我的项目中防止 XXE 攻击。这是在 java 7（没有 maven）和 jboss-as-7 服务器上运行的旧 api 项目。但是在执行过程中我得到错误： org.xml.sax.SAXNotRecognizedException: Property ' http://javax.xml.XMLConstants/property/accessExternalDTD ' is notknowledge。
org.xml.sax.SAXNotRecognizedException: Property 'http://javax.xml.XMLConstants/property/accessExternalDTD' is not recognized.
15:19:02,845 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at org.apache.xerces.jaxp.validation.ValidatorImpl.setProperty(ValidatorImpl.java:218)
15:19:02,846 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at com.uid.kua.web.KUARestController.authenticateAtAUA(KUARestController.java:118)
15:19:02,847 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
15:19:02,847 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
15:19:02,848 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
15:19:02,849 ERROR [stderr] (http-localhost-127.0.0.1-8080-3) at java.lang.reflect.Method.invoke(Method.java:606)
我已经搜索过它，每个论坛都有不同的含义，说它是一个错误。我还没有找到针对此异常的任何相关解决方案。请帮忙。提前致谢。